onActivityResult中的完成活动不起作用

问题描述

我有两项必须共同生活或死亡的活动.基本上，AlphaActivity会做一些工作，然后为BetaActivity调度一个意图(startActivityForResult()).完成BetaActivity后，我希望它为GammaActivity调度一个意图(startActivity())，然后对其自身调用finish().完成后，我希望调用AlphaActivity的onActivityResult()方法，但这似乎从未发生.我的设计是这样的:在AlphaActivity的onActivityResult()中，我称为finish().我的计划是，一旦达到GammaActivity，用户将永远无法返回AlphaActivity或BetaActivity.但是目前，后退"按钮确实将用户带到AlphaActivity.

I have a pair of activities that must live or die together. Basically AlphaActivity does some work and then dispatches an intent (startActivityForResult()) for BetaActivity. When BetaActivity is done, I want it to dispatch an intent (startActivity()) for GammaActivity and then call finish() on itself. Upon finishing I was hoping for AlphaActivity's onActivityResult() method to be called, but that never seems to happen. My design is such that inside AlphaActivity's onActivityResult(), I call finish(). My plan is such that once GammaActivity is reached, a user cannot ever return to either AlphaActivity or BetaActivity. But presently the back button does take the user to the AlphaActivity.

我确实有一些想法，为什么它不起作用，但是在这里讨论它们是没有意义的，因为我对可能真正起作用的东西很感兴趣.

I do have some ideas why it's not working, but discussing them here is pointless since I am interested in what might actually work.

代码都是非常标准的东西:

The code is all quite standard stuff:

从Alpha内部

private void startBetaActivity() {
    Intent intent = new Intent(this, BetaActivity.class);
    startActivityForResult(intent, Constant.EXIT_CODE);

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == RESULT_OK) {
        if (requestCode == Constant.EXIT_CODE) {
            this.finish();
        }
    }
}

在Beta内部:

if (success) {
            startGammaActivity();
            finish();
        }

推荐答案

我认为您只需要:

if (success) {
        startGammaActivity();
        setResult(Activity.RESULT_OK); //add this
        finish();
}

这篇关于onActivityResult中的完成活动不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！